i know this looks like science fiction. it's not. >> wow. >> this is early. this is still years away. drops the package. >> there's the package. >> you come and get your package. >> we can do half hour delivery and we can carry objects up to 5 pounds which covers 86% of the items deliver. >> what's the range of the fulfillment center -- >> they could be a 10-mile radius from the center. it could cover vary yaus areas of the population. it won't deliver everything. these are electric motors, so this is all electric. it's very green. better than driving trucks around. this is all an r & d project. >> with drones there's somebody sitting in front of a screen. >> not these. they're autonomous. you give it instructions. >> what's the challenge? >> the hard part is putting all the redundancy all the reliability, all the systems you need to say, look this thing can't land on somebody's head while they're walking around in the neighborhood. >> it's not good. >> i don't want anyone thinking it's around the corner. >> years mean five ten --? >> i'm at onity mist. it ca